title: Accuracy of high-resolution computed tomography in locating facial nerve injury sites in temporal bone trauma.
abstract: In this study, high-resolution, multislice computed tomography findings are compared with surgical findings in terms of the fracture location in patients with traumatic facial paralysis. Patients with traumatic facial paralysis with grade VI House-Brackmann scale who met the criteria for surgical decompression between 2008 and 2012 were included in this study. All the patients underwent a multislice high-resolution, multislice computed tomography (HRCT) using 1-mm-thick slices with a bone window algorithm. The anatomical areas of the temporal bone (including the Fallopian canal) were assessed by CT and during the surgery (separately by the radiologist and the surgeon), and fracture line involvement was recorded. Forty-one patients entered this study. The perigeniculate area was the most commonly involved region (46.34 %) of the facial nerve. The sensitivity and specificity of HRCT to detect a fracture line seems to be different in various sites, but the overall sensitivity and specificity were 77.5 and 77.7 %, respectively. Although HRCT is the modality of choice in traumatic facial paralysis, the diagnostic value may differ according to the fracture location. The results of HRCT should be considered with caution in certain areas.
authors.affiliation: Department of Otorhinolaryngology, Ghaem Hospital, Faculty of Medicine, Mashhad University of Medical Sciences, Ahmadabad Avenue, Mashhad, Iran.
authors.forename: Mohsen
authors.initials: M
authors.lastname: Rajati
authors.forename: Masoud
authors.initials: M
authors.lastname: Pezeshki Rad
authors.forename: Shirin
authors.initials: S
authors.lastname: Irani
authors.forename: Mohammad Taghi
authors.initials: MT
authors.lastname: Khorsandi
authors.forename: Masoud
authors.initials: M
authors.lastname: Motasaddi Zarandy
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000465:Algorithms; D002648:Child; D002675:Child, Preschool; D019299:Decompression, Surgical; D020220:Facial Nerve Injuries / Q000000981:diagnostic imaging* / Q000601:surgery; D005158:Facial Paralysis / Q000000981:diagnostic imaging / Q000209:etiology / Q000601:surgery; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D061330:Multidetector Computed Tomography; D012680:Sensitivity and Specificity; D012887:Skull Fractures / Q000000981:diagnostic imaging* / Q000601:surgery; D013701:Temporal Bone / Q000000981:diagnostic imaging* / Q000293:injuries / Q000601:surgery; D055815:Young Adult